The family of a teenager who was stabbed to death in the street have paid tribute to the "caring, quiet and easy-going boy".

A murder investigation is under way after Kieran Crump Raiswell, 18, was killed by a lone knifeman as he walked along the street in Old Trafford, Greater Manchester, on Wednesday afternoon.

Mr Crump Raiswell was not known to police and is understood to have been a completely innocent victim.

In a statement, issued through Greater Manchester Police, his family said: "Kieran was our eldest son and a caring brother to his younger brother and sister. He was a loving grandson, nephew, cousin, friend and he was loved by all who knew him. He had his whole life ahead of him.

"He was due to go to Sheffield Hallam University in September of this year to study history. Kieran was a quiet, easy-going boy who loved to be at home spending time with us.

"Kieran loved to watch Manchester City and he was a season ticket holder there. As well as watching football, Kieran played for FC Bluestar between the ages of 11-18 and he also played cricket for Sale Cricket club. Kieran also helped coach at his younger brother's football club."

A police spokesman said the motive for the attack in Upper Chorlton Road at about 2.20pm is not known.

Mr Crump Raiswell was given first aid by the side of the road when he was spotted by a Greater Manchester Fire and Rescue Service crew from Moss Side which was on its way back from a job.

The crew pulled over and tried to save the teenager by giving him first aid and oxygen but his injuries proved too severe and he later died in hospital.